Princess Anne handed sweet one-word nickname by key Royal Family member

Princess Anne is one of the most respected members of the - with key relatives using one highly formal nickname for her.

There are many cases where mother-in-laws can be somewhat tricky to handle, but , 46, has found a way to tread the fine line between showing respect for the royal who also happens to be a close relative. Mike married into the when he wed Zara in 2011, and he revealed how he refers to his mother-in-law.

When speaking to TV host , Mike revealed he keeps things formal with- calling her "Ma'am." He had appeared on ITV's with former rugby star James Haskell to talk about their podcast 'The Good, The Bad & The Rugby.'

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Mike and his podcast team were able to invite Princess Anne, and who are patrons of Scottish, English and Welsh rugby, onto their show. He praised them for being "amazing guests."

"Rugby has been going through a tough time and we wanted to showcase why it brings people together from all backgrounds, it's such an inclusive sport, but it also creates great human beings," Mike explained when speaking about the importance of the interviews, the reported.

When speaking about how his mother-in-law had been the patron of the Scottish Rugby Union for decades, he said: "It was more important to showcase why they like sport, why Princess Anne has been a patron for 37 years and why she loves the characters in the game. It accepts all fans and they come from all sides."

Mike shared some interesting informalities of the Royal Family following intense the late Queen Elizabeth II's private life. In his book, Mike said: "Her life wasn't like an episode of 'Downton Abbey', with meals on long tables and everyone dressed in their finery every night."

Mike proposed to his wife in December 2010 following 10 years of dating and the pair now have three children - Mia, 10, Lena, six, and three-year-old Lucas. While the couple have no official titles and are not supported financially by the Crown, they are believed to be work an estimated £30 million, according to Hello! Magazine.